Hi !!!!
I tell you my opinion:
Clovis is an historical, ancient, aristocratic name. I think it is rare everywhere also in
France (Clodoveo is nearly extinct here). But it is tryumphant and dignified because was used by kings.
Louie is childish, trendy, modern, overused nicknamey name.
I absoloutly pick
Clovis!! XD
I assume that people would pick
Louie because more 'friendly' and common.
Clovis is refined and unusual so it is not for everyone.